I have operated many types of worm farm.
Advantages and disadvantages can be found in them all.
Stacking Store Bought Worm Farms.
Some of the worm farms I have or have had in the past:
(I will come back later and fill in more info on the page)
Bath Tub Worm Farm – With Gravel Drainage Layer
Wheelie Bin Continuous Flow Through (CFT) Worm Bin (FREE Plans Available)
“BEAST” CFT’s – Continuous Flow Through Worm Farms – And Free CFT Guide
Wedge Windrow And How-To Plans/E-Book